When is old enough to be formally educated about addiction?

Is there enough information available to children and parents about legal and illegal drugs? There is plenty of information available on the internet, but is that enough to educate parents and their young children about the reality of developing a drug or alcohol addiction? Should there be more education in schools and if so, what age should children first be experiencing lessons about addiction? Would you say that 8 years old is too young or that 14 years is too old?

 

How could we go about implementing more information for children whose parents have an addiction: crisis lines, on line info, school welfare etc...